Wrench.



No. 781,515. y f l .PAT/111111111 1111131.11105.

WRENCH.'

' AP PLIOATION FILED 00T. 27, 11304;.v

, JSM/indu; A

l nventor A Witnesss i y zen of the United States, residing at Whigham,y

Patented January 31, 1905.

PATENT OFFICE.-

GRIFFIN, OF VVHIGrHAM, GEORGIA.

WRENCH.

SPECIFICATION forming part of .-Letters Patent No. I781,515, datedJanuary 31, 1905.

` AApplicationfindoaom11904. serrano. 2911213.

To all whorrb if; r11/fry concer-'70,: l A Be it known that'I, LEROYGRIFFIN, acitiin the county of Decatur and State of Georgia, haveinvented a new and useful Wrench, of which the following is aspecification.

This invention relates to improvements in wrenches of thequick-actionclass, and has for its object to improve the constructionand increase the efliciency-of devices of this character.

With these and other objects in view, which will appear as the nature ofthe invention is better understood, the same consists in certain novelfeatures of construction, as hereinafter fully described and claimed.v

lIn the accompanyingdrawings, forming a part of this specification,andin which corresponding parts are denoted by like `designatingcharacters, is illustrated the preferred form of embodiment of theinvention capable of carrying the same into practical operation, itbeing understood that the invention is not necessarily limited thereto,as various changes in the shape, proportions, and general assem.

blage of the parts may be resorted to without departing from theprinciple of the invention or sacrificing any of its advantages.

In the drawings thus employed, Figurel is a side elevation with one ofthe movable jaw members detached, and Fig. 2 is a perspective View ofthe detached jaw member. Fig. 3'is a transverse section of Fig. 1 withboth of the movable jaw-sections in position. Fig. 4 is a rear elevationof the upper portion of the improved wrench. Fig. 5 is a detachedperspective view of the, adjustable notched bar. Fig. 6 is a detachedperspective view of the clamp-block by which the lower end of thelnotched bar is-secured.

The improved implement comprises a stock 10, having a stationary jaw 11at one end and with the other end extended into a handle 12, the jaw 11being preferably extended laterally upon both sides of the stock, oneside for engaging pipes or rods and the other side for nuts or othersimilar objects. .A guideway 13 is formed upon the stock adjacent to thejaw member 11, and another guideway, 14, at the juncture of the handleand stock, the latter guideway vbeing preferably formed one half in thebody of the stocl; and the other half in the inner `face of a detachableplate 15. Thevlower end of the plate 15 is inclined, as at 16, andprovided with a rib V17 on the inclinded portionthereof for engagementwith .a correspondingly-inclined recess in the stock,

so that one screw, as at 18, will be suliicient .to hold the plate inposition.

Movably disposed upon one face of the stock `10 is a bar 19, slidablyengaging the guideway 13 by one end and with a threaded stud 20extending from the other end and slid` ably engaging the guideway 14. Anut 21, preferably provided with a milled exterior, operates upon.the'stud 2O and rotates in a recess 22 in the stock 10. The bar 19 isprovided at one end with a recess 23 for engaging a rib/ 24 within theguideway 13 and is likewise provided with spaced notches orratchet-teeth 25 on its outer face.

The movable jaw isformed in two sections 26 27, said sections beingprecisely alike, except that they are rights and lefts. The sections 2627 are provided with internal recesses 28 29 for receiving the stock 10and its associated bar member 19 and are firmly united for slidablemovement on the stock` 10 by transverse bolts or rivets 30 and aclamp-plate angles to the recesses 33 34 to receive a bolt 35, said bolthaving one end thereof inclined and its opposite end engaging anaperture in the plate 31, by which means it is guided for longitudinalmovement. The bolt is provided with a coiled spring 36, by means ofwhich the inclined'end is held in yieldable engagement with the teeth 25of the bar 19. A triplever 37 is pivoted in the recesses 33 34. One endof the trip-lever 3-7 passes throughfan aperture in the bolt 35, and theopposite end thereof is pivoted to a pin 38, which engages an aperturein the plate 31 and is providedl with a terminal button 39. By thisarrange- TOO ment it will be obvious that the movable jaw member will beiirmly held from movement in one direction, but free to be moved in theopposite direction b y reason of the inclined form of the teeth 25 andinner end of the bolt 35 and readily released for adjustment in theopposite direction by slight pressure of the thumb of the operator uponthe button 39.

The jaw members 26 27 overhang the plate 31, so that the protruding stem38 and its button 39 are protected while the wrench is being used.

1f a closer adjustment is required than can be secured by the spacesbetween the teeth or notches 25, a few turns of the nut 2l will adjustthe bar 19 longitudinally ot' the stock carrying the jaw memberstherewith, as will be obvious.

Having thus described the invention, what is claimed isl. In a wrench, astock provided at one end with a stationary jaw and havingits oppositeend extended into a handle, said stock being provided on one sidethereof' with spaced longitudinal guideways and having a lateral recessformed in the stoel; in alinement with said guideways, a notched bar oneend of which engages one of said guideways the opposite end thereot`being provided with a threaded stud for engagement with the secondguideway, a nut disposed in the lateral recess and engaging the threadedstud, a movable jaw, a spring-controlled pawl carried by said movablejaw and yieldably engaging' said notched bar, and means for releasingsaid pawl.

2. In a wrench, a stock provided at one end with a stationary jaw andhaving its opposite v end extended into a handle, said stock beingprovided on one side thereof with spaced longitudinal guideways andhaving a lateral recess formed in the stock in alinement with saidguideways, a notched bar one end of which engages one of saidguidewaysthe opposite end thereof being provided with a threaded studfor engagement with the second guideway, a nut disposed in the lateralrecess and engaging the threaded stud, a movable iaw embracing the stockand notched bar and formed of a plurality of sections detachably securedtogether, a spring-controlled pawl carried by said movable jaw andadapted to engage the notches in said bar, and meansfer releasing thepawl.

3. In a wrench, a stock provided at one end with astationary jaw andhaving its opposite end extended into a handle, said stock beingprovided at one side thereo't with spaced longitudinal guideways andhaving a lateral recess formed in the stoel( in alinement with saidguideways, a notched bar one end ot which engages one of said guidewaysthe opposite end thereof being provided w ith a threaded stud lerengagement with the second `guidewav, a nut disposed in the lateralrecess and eng ging the threaded stud, a movable liaw embracing thestock and notched bar and termed in two seetions detachably securedtogether, said jawsect-ions having terminal recesses termed in theircontiguous faces, a plate provided with spaced apertures extendingacross said re cesses and connected to both jawsectiens, aspring-controlled pawl carried by said iawsections and passing throughone olt the apertures in said plate tor engagement with the notched bar,a trip-lever pivoted in said recesses and engaging an aperture in thespringpawl, and a trip-pin passing through the second aperture in theplate and pivoted lo the trip-lever.

ln testimony that ,l claim the foregoing as my own l have heretoai'lixed my sigmlture in the presence ot' two witnesses.

LERO Y (l Rl FFI N.

fitnessesz A. S. lowuLL, l). O. Pannen.

